APC UPS cable
From HwB
Cable between APC UPS and serial port of computer. Compatible with APC models 250, 400, 450, 600, 900, and 1250. APC order part #940-0020B.
Pinout
9 PIN DE-9 FEMALE to the PC.
9 PIN DE-9 MALE to the UPS.
| PC | UPS | ||
|---|---|---|---|
| Pin | Direction | Pin | Description |
| 5 |  |
4 | Ground |
| 8 |  |
2 | Power failure |
| 4 |  |
1 | UPS Shutdown |
| 1 | |
5 | Low Battery |
Note: Add a 10kΩ restistor between pin 5 & 8 on UPS connector.
Source
Contributor
- Cosmin Dîgă
- Joakim Ögren